Electric water-heater.



J. POLAK. ELECTRIC WATER HEATER. APPLICATION FILED FEB. l, 1913. 1,079,185, Patented Nov. 18, 1918.

2 SHEBTS-SHEET l.

INVENTOR ,/05e/0/7 1D0/k mon/vm In l- WIT/VESSES f/Zz@ J. POLAK. ELECTRIC WATER HEATER. APPLIGATloN FILED IBB. 1, 191s.

Patented N0v.1s,-1913.

2 SHEETS-SHEET 2.

/NvENrqn Josep/7 ,D0/0k ATTORNEYS JosEPH remix, or NEW YORK, N. Y.

EL'RC WATER-HEATER.

Specicaton of Letters Patent.

Patented Nov. 18,1913.

ppliation led I'eliruafy 1, 1913. Serial No. 745,610.

Toull 'whom t may concern: K I

Beit known that I, Joseph Potin, a citi zen of the United States, and a resident of the city of New York, borough of Brook ly'n, in the county of Kings and State of 'New York, have invented a new and Iniproved Electric Water-Heate1-, of which the' following is a, full, clear, and exact descrip; tion.

Thisinvention relates generally to electric Water heaters, and is more particularly clirected to a' structure characterized by a num; borof communicatin chambers, wherein the heating elements an the liquid to be heated are contained, the heating elements being 'entirely'surrounded by the said liquid.

The principal object of the inveiition is to provide a new and improved electric Water heater characterized byV a number .of4

concentrically' arran ed heating elements, the' spaces between t ein forming chambers through which water Hows, the heating' ele'- ments being surrounded on all sides by the water, means being provided whereby the volume and temperature of the liquid may,

be regulated or` controlled.

A 'further object of the invention is the provision of an' electric' Water heater ernbb'dying a device wherein any number of heating units' may' be assembled in' lorder' to provide al heater' varying in and ca-Y pacitg.- ,l

Ot er' objects and advantages following the use of the inventive idea will appear as the description of the preferred embodiment' thereof proceeds.

Reference is to be had to the accompanying drawings forming s part of this speci cation, in which similar cheiacters of refe ere'nce indicate corresponding' parts in all thoviows, and in whiche- Figure 1 is an elevation of the heater in operative relation with a aucet', showing' the general exterior appearance of the' de'-v vioo; Fig; 2 s vertical sectional 'view of the heater; Fig. 3 is a horizontal sectional View on the line 3** 3 of Fig". 2; F ig. 4- is a sectional. View on the line of Fig. 2; Fig. 5 is o; vertical sectional viewv in pers eo tive of one of the heating elements; W ile Fig. 6 'is an' elevation of the of the switch and rheostat combined ,1^ and Fig. 7 is an elevati-on of thefront' of the sinne.

It is', of. coarse, clear' that the size of the heater as a; Whole, andthe appearance' and design of the several elements whichenterV into its makeup, may be widely varied in order to provide structures adapted to different uses Without departing from the inventive idea disclosed.

The heater comprises the ends 1 2 pro vided with peripheral flanges 3-4 which are threaded on the interior side, the thread ed portions engaging the shell 5- of the heater, the said shell serving to contain the heating elements and to provide the paths for the flow of Water therethrough. The end 1, which may also be termed the top, is provided with a central opening 6, adjacent which is a shoulder 7, threaded on' its interior and receiving a bushing 8 which may be' of insulating material if so desired; this bushing is provided with a passageway 9 extending therethrough, adapted to col'lvey the iiquid to be heated. The end 2, which may also be termed the bottom, is provided With an' opening 10, the end of the member heihg provided with a shoulder 11 which is counterbored and threaded on its` interior and adapted to receive the threaded end ci a bushingV 12 Whichmay be made of insulat-V ing material if sodesi'red. This bushing is provided with a passageway 13 extending therethrough adapted to convey' the Iiqi after heating.

Within the heater, and suitabl maintained in position, are a number ofYhea-ting elements 14,- the particular form of each of which is shown iii Fig. 5, it beiiig noted that theseel-emonts are ooncentrically ar'-l roinged and suitably spaced, whereby a conV tinu'ons passage forv the liquid through the hoster' is provided, the outer heating element 14 being spacedfro'ln the shelll or casing 5, so that when liq'iiid is passing through the heater the said elements are surrounded on all sides the liquid.

eiring particulariy to Fig; 5^, wherein the preferred form of the heating element is'A set forth, it will be noted that it is composed' of spaced cylindrical portions i5, between which is the heating element proper 16, which may be in the forni' of wire or othershaped material insulated the seid portions 15 in any suitable' manner, preferably by' means or a compound i7, whiohineloses the heating element and prevents shorten-ifcitirg thereof with the said portions' 15'. One end of each of the said portions i5 are connected by means of end pieces' 18, the top one of which is prefer-'abi' rovided with openings 1Q into which a bin ng central that would be lost by radiation is reduced to a minimum.

The appearance of the heater is pleasing, and the arrangement of the parts is such that a compact structure is provided, all of the parts being inclosed, the bihding posts and wires being protected by means of the casing 100 and the conduitn 101, so that the device is ractically of such structure that chances o injurythereto are reduced to a mimmum.

Having thus described my invention, what claimas new and desire to secure by Letters Patent is l. A heater comprising a casing having removable end flanges, one of said flanges having a fluid inlet and the second of said flanges having a iiuid outlet, said inlet and outlet lying inthe aXis of said casing, and a plurality of concentric electrically heated elements secured to each of said flanges and projecting into said casing, said elements of one of said flanges engaging between the elements of the second of said flanges, means for controlling the fluid inlet and the fiuid outlet, and means for controlling the heatingA effect of said elements. A

2. A heater comprising a casing having removable end flanges, one of saidlanges having a fluid inlet and thesecond of said flanges having a fluid outlet, a series of concentric electrically heated elements alternately secured to said flanges and intermediate and in alinement with said inlet and outlet, said heating elements being so disposed that the fluid flowing from said inlet to said outlet is gradually heated when flowing between said elements toward the center of the casing, thereby reducing the a'mount of heat radiation by said casing.

3. A heater, comprising a casing having removable end flanges, one of said flanges having an inlet and the second of said fla having an outlet; a series of concentric electrically heated elements in said casing; o posit-ely disposed drums connecting the alterirate heating elements together and communiveating therewith, each drum having means whereby it is secured to the end flange and thereby when the flange is removed from the casing the drum and the heating elements secured theretoare removed therewith; and insulating means secured to said drum adjacent said heating elements.

In testimony whereof I have signed'my name to this specification in the presence of two subscribing witnesses.

JOSEPH POLK.

Witnesses:

RUDOLPH C. GRoENNEwIoH, GABRIEL TESAR. 

